Accession Number : AD0774848

Title :   Dynamic Strength Study of Small Fixed-Edge, Longitudinally Restrained Two-Way Reinforced Concrete Slabs.

Descriptive Note : Final rept. Apr 71-Jun 72,


Personal Author(s) : Brown,Wayne M. ; Black,Michael S.

Report Date : DEC 1973

Pagination or Media Count : 101

Abstract : The study is one phase of an effort to develop criteria that will be helpful in evaluating or predicting the airblast load-carrying capacity of conventional floor slabs in existing Defense Civil Preparedness Agency approved shelters. The general objective of this study was to investigate the static and dynamic behavior of small, fixed-edge, longitudinally restrained, two-way reinforced concrete slabs. Twelve tests, four static and eight dynamic, were conducted on slabs with a clear span of 29 inches and a thickness of 0.89 inch. Two series of slabs corresponding to two different percentages of steel reinforcement (0.78 and 1.17 percent) were used. The slabs were subjected to uniformly distributed static loads up to 36.5 psi using water pressure and to dynamic airblast overpressures ranging from 26.5 to 56.8 psi using explosives. Measurements of pressure, deflection, and reinforcement strains were made, and results are presented. (Modified author abstract)

Descriptors :   *Floors, *Reinforced concrete, *Structural response, *Fallout shelters, Strength(Mechanics), Dynamic response, Loading(Handling), Construction, Airburst, Static loads, Static tests, Civil Defense

Subject Categories : Structural Engineering and Building Technology
      Civil Defense

Distribution Statement : APPROVED FOR PUBLIC RELEASE